cheklink: lazy process !

Here is a strange behavior of checkling, that I reproduced under Firefox/IE.... :

http://validator.w3.org/checklink?uri=lipn.fr/seminaires

is halting before ending the process, without any explanation :

Parsing...
 done (384 lines in 0.0s).
Checking anchors...
 done.
Checking link http://lipn.fr/~mogbil/workshopNOCOST.html
HEAD http://lipn.fr/~mogbil/workshopNOCOST.html  fetched in 1.1s
Checking link http://lipn.fr/A3/AAFD06/
HEAD http://lipn.fr/A3/AAFD06/  fetched in 1.1s
Checking link http://www.biomath.jussieu.fr/TIA/
HEAD http://www.biomath.jussieu.fr/TIA/ 



Can you explain here why ? :-(


Best regards, 
Cyril Banderier             Tel.  (33)  1 49 40 40 69
LIPN - CNRS UMR 7030        Fax.  (33)  1 48 26 07 12
Universite de Paris-Nord    
93430 Villetaneuse France   http://www-lipn.univ-paris13.fr/~banderier/